Java 实现在线打开 word 文档 并发处理
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2022-06-02 22:58:02
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1. 需求
防止多个用户同时打开一个文件，出现编辑保存文件相互覆盖的问题。
2. 页面代码
(1)web.xml
<!-- PageOffice Begin -->
<servlet>
<servlet-name>poserver</servlet-name>
<servlet-class>com.zhuozhengsoft.pageoffice.poserver.Server</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>poserver</servlet-name>
<url-pattern>/poserver.zz</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>poserver</servlet-name>
<url-pattern>/sealsetup.exe</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>poserver</servlet-name>
<url-pattern>/posetup.exe</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>poserver</servlet-name>
<url-pattern>/pageoffice.js</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>poserver</servlet-name>
<url-pattern>/jquery.min.js</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>poserver</servlet-name>
<url-pattern>/pobstyle.css</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>adminseal</servlet-name>
<servlet-class>com.zhuozhengsoft.pageoffice.poserver.AdminSeal</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>adminseal</servlet-name>
<url-pattern>/adminseal.zz</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>adminseal</servlet-name>
<url-pattern>/loginseal.zz</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>adminseal</servlet-name>
<url-pattern>/sealimage.zz</url-pattern>
</servlet-mapping>
<mime-mapping>
<extension>mht</extension>
<mime-type>message/rfc822</mime-type>
</mime-mapping>
<context-param>
<param-name>adminseal-password</param-name>
<param-value>111111</param-value>
</context-param>
<!-- PageOffice End -->(2)Default.jsp 页面
<%@ page language="java"
import="java.util.*,com.zhuozhengsoft.pageoffice.*"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>演示：并发控制</title>
<!--PageOffice.js和jquery.min.js文件一定要引用-->
<script type="text/javascript"
src="<%=request.getContextPath()%>/jquery.min.js"></script>
<script type="text/javascript"
src="<%=request.getContextPath()%>/pageoffice.js" id="po_js_main"></script>
</head>
<body style="font-size: 12px;">
<form id="form1" runat="server">
<div
style="border: solid 1px RoyalBlue; width: 500px; text-align: center; height: 200px; margin: 100px auto;">
<div style="margin-top: 50px; height: 170px;">
<span style="color: Red;">操作说明：</span><span>首先点击“张三打开文件”会在弹出窗口中打开Word文档（不要关闭窗口），<br />再点击“李四打开文件”，看并发控制效果。</span>
<br />
<br />
1：<a href="javascript:POBrowser.openWindowModeless('Word.jsp?userid=1','width=1200px;height=800px;');">张三打开文件</a>
<br />
<br />
2：<a href="javascript:POBrowser.openWindowModeless('Word.jsp?userid=2','width=1200px;height=800px;');">李四打开文件</a>
</div>
</div>
</form>
</body>
</html>
(3)Wod.jsp
<%@ page language="java"
import="java.util.*,com.zhuozhengsoft.pageoffice.*"
pageEncoding="utf-8"%>
<%
String userName = "somebody";
String userId = request.getParameter("userid").toString();
if (userId.equals("1"))
{
userName = "张三";
}
else
{
userName = "李四";
}
PageOfficeCtrl poCtrl=new PageOfficeCtrl(request);
poCtrl.setServerPage(request.getContextPath()+"/poserver.zz");
poCtrl.addCustomToolButton("保存","Save",1);
poCtrl.setSaveFilePage("SaveFile.jsp");
//设置并发控制时间
poCtrl.setTimeSlice(20);
poCtrl.webOpen("doc/test.doc",OpenModeType.docNormalEdit,userName);
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>最简单的打开保存Word文件</title>
</head>
<body>
<script type="text/javascript">
function Save() {
document.getElementById("PageOfficeCtrl1").WebSave();
}
//文档关闭前先提示用户是否保存
function BeforeBrowserClosed(){
if (document.getElementById("PageOfficeCtrl1").IsDirty){
if(confirm("提示：文档已被修改，是否继续关闭放弃保存 ？"))
{
return true;
}else{
return false;
}
}
}
</script>
<form id="form1" >
当前用户： <%=userName %>。
<div style=" width:auto; height:700px;">
<%=poCtrl.getHtmlCode("PageOfficeCtrl1")%>
</div>
</form>
</body>
</html>
(4)SaveFile.jsp
<%@ page language="java" import="java.util.*,com.zhuozhengsoft.pageoffice.*" pageEncoding="utf-8"%>
<%
FileSaver fs=new FileSaver(request,response);
fs.saveToFile(request.getSession().getServletContext().getRealPath("ConcurrencyCtrl/doc/")+"/"+fs.getFileName());
fs.close();
%>
3. 效果演示
4:注意:
(1)本示例为了兼容所有的浏览器,用pageoffice提供的POBrowser方法. 用 POBrowser 的页面比许引用 pageoffice.js 和 jquery.min.js 文件.
pageoffic.js 文件 和 jquey.min.js 文件封装到 jar 里面了.只需要web.xml 里面配置路径就可以. 一般是当前项目的根目录下. 参考上面的代码
<script type="text/javascript" src="<%=request.getContextPath()%>/jquery.min.js"></script>
<script type="text/javascript" src="<%=request.getContextPath()%>/pageoffice.js" id="po_js_main"></script>
引用pageoffice.js 的时候 id 必须写
(2)打开文档的时候会提示注册
PageOffice V4.0 标准版试用序列号：IMTG6-BSXJ-JGZ6-3BIWM
(4)必须是不同的用户打开同一个文档.
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